6. Here is a link and a qote from Salt Lake City..

note: this report does not say for people to stay inside..at least in the first few paragraphs..It takes a softer tone to this situation..oh..it comes and goes..just hold your breath..it will go away soon.

"Meanwhile, the Utah Division of Air Quality has been puzzling over the remarkably high readings in Utah County. Monitor readings for one hour there hit 147 micrograms of pollution per cubic meter of air — more than four times the EPA’s health-based standard of 35.

Plus, daily average levels remained at well above three times acceptable levels, making them the highest levels the state’s ever recorded for the area."